Operating device for elevator-doors.



No. 699,363. Patented May 6, I902.

H. BITNER. OPERATING DEVICE FOR ELEVATOR DUOR S.

(Application filed Sept. 20. 1900.)

(No Model.) 2 Sheets$heet I.

Patented May 6, I902.

H. BITNER.

OPERATING DEVICE FOR ELEVATOR DOORS.

(Applicltion filed Sept. 20. 1900.)

2 Sheefs-$heei 2.

(No Model.)

Nomuma, wAsmucfu, u. c.

Unirrnn STATES PATENT OFFICE.

HARRY BITNER, OF BERWYN, ILLINOIS, ASSIGNOR TO THE WINSLO\V BROS. 00.,OF OIIIOAGO,ILLINOIS, A CORPORATION OF ILLINOIS.

OPERATING DEVICE FOR ELEVATOR-DOORS.

SPECIFICATION forming part of Letters Patent No. 699,363, dated May 6,1902.

Application filed September 20, 1900. Serial No 30,576- (No model.)

Improvements in Operating Devices for Ele vator-Doors, of which thefollowing is a specification.

My invention relates to certain improvements in operating devices forelevator-doors,

the object of which is to operate by a single wire, rod, or cable aseries of doors in such a manner that any one of them may be openedwithout affecting the rest;

Furthermore, it is the object of the invention to limit the motion ofthe wire or cable to such range as may be necessary for the movementofthe doors and to allow it to remain stationary when none of the doorsare in motion.

To such end the invention consists in certain novel devices foractuating said rod and also for connecting it'with the doors in such away as to operate the latter in the desired manner.

In the drawings, Figure 1 is an elevationof the upper part of theelevator-inclosure looking from the inside and showing the upper part ofa door in connection therewith. lnig. 2 is a vertical transverse sectionin line'2 2 of Fig. 1 looking in the direction of the arrow 2. Fig. 3 isa planof the top of the door, the parts above the same being cut away inline 3 3 of Fig. 1. Fig. 4 is an elevation, on a larger scale,of theconnecting devices between Fig. 5 is an elevation of a fluid-motoradapted to be placed in the basethe rod and door.

hangers C are provided with horizontal extensions c c, the latter beingshown in dotted lines in Fig. 4., to which are attached, respectively,cords E E, running over pulleys F F, supported upon the bracket andacting to turn the cords from horizontal into vertical directions. Thecord E passes downward from the pulley F and is secured to'a slide 9,adapted to move freely upon the connecting-rod, which is lettered G. Ablock g, adj ustably secured to the rod, limits the upward movement ofthe slide e upon the latter. The cord E extends upward from the pulley Fand is secured to a slide e, also working freely upon the rod G, andprovided with a pivoted hook H, adapted to hook over a lug 9 upon ablock g, also adj ustably secured to the 'rod G. The hook H is pressedby a spring h, having a bearing upon the slide in a direction tendingtoengage it with the lug g and said hook has uponits free end an inwardextension h passingthrough the bracket X and adapted to be engaged toforce the hook out of engagement with the block g. The hook is supportedby the bracket itself when thus forced out of engagement. When the hookis engaged with the block, the reciprocation of the rod Gopens andcloses the door. When disengaged, the rod merely runs up in the slide 6in the upward movement and slides down through the same in the downwardmovement. The rod is operated by a fluidmotor I, controlled by means ofa Wire J, normally held in its lowest position by a spring j, and raisedby a lever K, pivoted to the bracket X, having an arm 7t, adapted toengage a button 70, and another arm 70 adapted to engage the hook H tothrow it out of engagement with the block g. A pin 73 upon the latterarm of the lever offers means by which the lever may be moved by anysuitable de-' vices arranged upon a car. A spring 70 tends to hold thelever in the position shown in Fig. 1, in which the connecting-rod Gr isfree to move upward and downward without affecting the door. I A weightM, hung upon pulleys m m and connected with the rod, raises the latterwhenever permitted to do so by the motor I, and the latter hassufficient power to overcome the weight and draw the rod down. Agravitylatch N, pivoted to the bracket, hooks over the extension 0 ofthe door-hanger O and is provided with an oblique extension or, engagedby the lever K, to release the latch.

The operation of the device is as follows: Taking the parts as shown inFig. 1, in which the reciprocation of the rod for the operation ofanother doorhas no effect upon the one,

here shown, if the lever K be swung to the right it will strike theportion n of the latch, release the latter, and at the same time willpermit the hook H to engage the block g. The arm is at the same time hasraised the wire J, set the motor I into operation inan upward direction,permitting the rod G to be drawn upward by the weight M drawing upwardupon the cord E and slacking up the cord E. This pulls the door to theright and opens it. As soon as the lever isreleased it springs back intoits original position, reversing the motor and drawing downward upon therod, which closes the door, and as the hook H is drawn down upon thelever K the latterforces the hook out of engagement with the block g andreleases the door from the rod. At the same time the latch N engages thedoor and holds it closed.

The particular devices herein shown-are to a considerable extentnon-essential, and the invention is not limited thereto.

I claim as new and desire to secure by Letters Patent 1. The combinationwith a horizontally-reciprocable door, of a vertically-reciprocable rod,a pair of pulleys respectively upon opposite sides of said rod, aflexible connection secured to one side of the door passing around oneof said pulleys along said rod in one direction and having a limitedsliding engagement therewith, a flexible connection secured to the otherside of the door passing over the other pulley and having means oftemporary engagement with the rod, means for reciprocating the rod andmeans for effecting such temporary engagement; substantially asdescribed.

2. The combination with a horizontally-reciprocable door, avertically-reciprocable rod, and pulleys upon opposite sides thereof, offlexible connections secured to the opposite edges of the door extendingover the respec tive pulleys and along said rod in opposite directions,-slides secured to said connections and guided on the rods,- a blocksecured to said rod and adapted to engage one of said slides in thedirection which closes the door, a block secured to said rod adjacent tothe other slide and a device for effecting engagement between the latterslide and the adjacent block and thereby open the door; substantially asdescribed.

3. The combination with a horizontally-reciprocable door, of a verticalreciprocable rod, pulleys journaled adjacent to said rod, cables leadingfrom the opposite edges of the door, around the pulleys in oppositedirections, slides secured upon the ends of said cables and sliding uponthe rod, blocks secured upon the rod, one of which is adapted, when therod is moving in one direction, to draw the adjacent slide with it, aspring-pressed hook upon the other slide adapted to hook upon theadjacent block, means for reciprocating the rod and means for throwingthe hook into or out of engagement with the. block; substantially asdescribed.

4. The combination with a horizontally-reciprocable door, of avertically-reciprocable rod, pulleys adjacent to the rod, cablesextending from opposite edges of the door around the pulleys in oppositedirections, slides secured to said cable and guided upon the rod, ablock upon the rod adapted to engage one of the slides to move the doorin one direction, a block secured to the rod adjacent to the other sideand adapted to be temporarily connected with the adjacent slide to movethe door in the opposite direction, devices for reciprocating the rodand an operating-lever adapted to efiect the engagement of said blockand slide and to start the device for reciprocating the rod;substantially as de* scribed.

5. The combination with a horizontally-reciprocable door, of avertically-reciprocable rod,pulleys adjacent thereto,cables extendingfrom the opposite edges of the door around the pulleys in oppositedirections, slides secured to said cable and guided upon the rod, ablock secured upon the rod adjacent to one of the slides and adapted toengage said slidein the movement of the rod in one direction to move thedoor in one direction, a block secured upon the rod adjacent to theother slide,- a spring-pressed hook pivoted upon the latter slideadapted to hook upon the adjacent block, a lever adapted, when in oneposition, to hold the hook out of engagement with the block to permitthe rod to be reciprocated without aifecting the movement of the door,and a motor for reciprocating the rod connected to said lever, wherebythe movement of said lever into a second position permits of theconnection between the hook and block and starts the motor;substantially as described.

6. The combination with a horizontally-reciprocable door, of avertically-reciprocable rod, pulleys adjacent thereto, cables extend ingfrom the opposite edges of the door around the pulleys in oppositedirections, slides secured to said cable and guided upon therod, a blocksecured upon the rod adjacent to one of the slides and adapted to engagesaid slide in the movement of the rod in one direction to move the doorin one direction, a block se cured upon the rod adjacent to the otherslide, a spring-pressed hook pivoted upon the latter slide and adaptedto hook upon the adjacent block, a lever adapted, when in one position,to hold the hook out of engagement with the block to permit the rod tobe reciprocated without affecting the movement of the door and a motorfor reciprocating the rod connected to said lever, whereby the movementof the lever into a second position allows the spring-hook to engage theblock and starts the motor to move the rod in one direction and thereturn of the lever to the first position starts the motor in theopposite direction; substantially as described.

7. The combination with a horizontally-reciprocable door, of avertically-reciprocable rod, pulleys adjacent thereto, cables extendingfrom the opposite edges of the door around the pulleys in oppositedirections, slides secured to said cable and guided upon the rod, ablock secured upon the rod adjacent to one of the slides and adapted toengage said slide in the movement of the rod in one direction to movethe door in one direction, a block secured upon the rod adj acent to theother slide, a spring-pressed hook pivoted upon the latter slide andadapted to hook upon the adjacent HARRY BITNER. Witnesses:

CHAS. O. SHERVEY, S. Buss.

